%0 Journal Article %A V. A. Bronshten %T Breakup of a comet as a possible cause of the impact structure group formation %J Doklady Akademii Nauk %D 1986 %P 307-308 %V 287 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1986_287_2_a11/ %G ru %F DAN_1986_287_2_a11